GHSA-r44w-pfx8-28jv
HIGHGHSA-r44w-pfx8-28jv is a high-severity (CVSS 7.5) Information Exposure vulnerability in fixpunkt/fp-newsletter. O3 Security confirms whether GHSA-r44w-pfx8-28jv is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
"Newsletter subscriber management" (fp_newsletter) TYPO3 extension leaks subscriber data
Blast Radius
fixpunkt/fp-newsletter🐘fixpunkt/fp-newsletter🐘fixpunkt/fp-newsletterReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
An issue was discovered in the fp_newsletter (aka Newsletter subscriber management) extension before 1.1.1, 1.2.0, 2.x before 2.1.2, 2.2.1 through 2.4.0, and 3.x before 3.2.6 for TYPO3. Data about subscribers may be obtained via unsubscribeAction operations.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | fixpunkt/fp-newsletter | all versions | 1.1.1 |
| 🐘Packagist | fixpunkt/fp-newsletter | ≥ 1.2.0&&< 2.1.2 | 2.1.2 |
| 🐘Packagist | fixpunkt/fp-newsletter | ≥ 3.0.0&&< 3.2.6 | 3.2.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for fixpunkt/fp-newsletter. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update fixpunkt/fp-newsletter to 1.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r44w-pfx8-28jv is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-r44w-pfx8-28jv is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-r44w-pfx8-28jv. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-r44w-pfx8-28jv in your dependencies?
O3 detects GHSA-r44w-pfx8-28jv across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.